Try-square.



Patented @015.111,1910.

M. DICKSON,

TRY SQUARE.

ArPLIoATIoN FILED 11mm. 1909.

Smog/nto@ f 1HE NoRRls PETERS cm. wAsHmcmN, u. c.

- Witwe/oom:

FATFNT @FFQM MYR/ON DICKSON, OF MARTINSVILLE, NDIANA.

TRY-SQUARE.

Patented (let. a, i910.

serial No. 535,079.

To all whom i may concern:

Be it known that l, MrnoN Diowsow, a citizen of the United States, residing at Martinsville, in the county of Morgan and State of Indiana, have invented certain new and useful Improvements in Try-Squares, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain improvements in try-squares and more particularly to such an article having beveling and ruling attachments.

It is the object of the invention to combine with a try-squarc a bevel. blade with novel means of attachment for the latter and means for retaining the blade in a normally inoperative position, and it is the further object of the invention to include in such a structure a rule and a gage for the rule, with novel means for attachment of the latter parts.

@ther improvements and details in the structure and arrangement of parts will be pointed out hereinafter, and for a clear understanding of the description reference is directed to the accompanying drawings which form a part hereof, and wherein is disclosed for the purpose of illustration a convenient embodiment of the invention.

In the drawings: Figure l is a plan view of t-he article complete showing the bevel attachment in an inoperative position, and indicating in dotted lines the bevel blade in an adjusted or operative position. F 2 is a top view, Fig. 3 is a section on the line of Fig. l; Fig. l is a longitudinal section broken away, and Fig, 5 is a section on the line 5 5 of Fig. l.

lVith more particular refer-ence to the drawings wherein like reference numerals indicate corresponding parts throughout the several views 1 is a suitable handle or stock conveniently7 of wood construction and having at its inner edge a m-etallic facing plate 2 constituting one side of the square. The facing plate is secured in any desired manner. The handle or stock l is slotted at its upper end at 2 and is adapted for the reception of the inner end of the square blade 3, said blade being secured at said inner end by rivets or the like 3a. Extending longitudinally of the upper edge of the blade and secured thereto at its inner edge as by riv-et la is a rule 4 bearing suitable characters indicative of the various divisions, which said divisions are conveniently defined by notches 4l to guide the registration of a pencil with the divisions of the rule for marking purposes. Slidably mounted on the rule l is a combined gage and pencil carrier the same comprising a body part. 5 litting over the front surface of the rule l and having flanges 5'l1 and 5b respectively arranged to engage over the upper and lower edges of said rule, the flange 5 being adapted to engage the face of the blade 3, and the flange 5l having a downward extension 5C overlying the rear surface of said blade 3. The engagement between the pencil carrier and rule is one permitting of longitudinal adjustment relative to the latter while preventing accidental removal. A suitable thumb screw G is arranged to pass through an inclined threaded recess in the body part 5 and is adapted at its lower end to seat in the notches 4' to thereby retain the gage and pencil carrier in adjusted positions. An opening 7 projecting transversely through the member 5 at a point adjacent the top of the latter and beyond the upper edge of the rule 4L constitutes a receiving opening for a pencil, crayon or the like 8, which latter may be secured in position in said opening, by a suitable screw 8a.

The means for securing the outer end of the rule 4 in position conveniently comprises an overlapping flange 9 which is preferably an integral part of the blade 3, and to this end the blade 3 may be of sheet metal, and preferably is of such construction or other bendable material, whereby a projecting part of the blade may be bent upon itself and over' the edge of the rule as shown. The part 9 constitutes not only means for retaining the outer end of the rule l in place, but the edge thereof constitutes as well a stop for the pencil carrier and gage for limiting the longitudinal adjustment of the latter, and preventing its separation from the end of the rule.

A recess conveniently segmental incharacter is provided in the upper surface of the handle or stock l, said recess being at the inner edge of said handle at a point adjacent the lower edge of the try-square blade 3, the said recess being indicated by the reference numeral l0 and connecting at its lower end with ay strz ight edge 10a of the handle part.' The bevel blade is indicated by the numeral ll and comprises an elongated member having an enlarged portion at its rear end conveniently formed by a downward projection 11a, and said blade is pivotally mounted at said enlarged portion to the handle member 1 as by a thumb screw 12 having a threaded terminal 12a adapted to en- Y gage in a threaded recess in the handle 1 at a point adjacent the connection of the latter with the blade 3. The thumb screw 12 has an unthreaded portion 12b constituting a bearing or pintle upon which the blade 11 is mounted, through the medium of a slotted portion 11b in the inner end of the blade 11. rl`he blade 11 is mounted upon the bearing 12b for swinging movement about the pivot formed by said bearing 12b and it will be observed that the same when properly adjusted to the desired position may be locked in said position by imparting turning movement to the thumb screw 12 thereby bringing the blade into frietional holding contact with the upper surface ot' the blade 3. It will be noted that the slotted portion 11" of the blade 11 is arranged in substantial alineinent with the lower edge of the blade 11, and that the thumb screw 12 engages the handle 1 at a point adjacent the lower edge of the blade 3, with the result that when in normal position the blade 11 will occupy a position within the edge of the blade 3, and offer no obstruction beyond the lower edge of the latter. Then in this position, it being noted that the bevel blade is then inoperative, it is of course desired to retain the blade fixed against swinging movement or separation from the blade at its outer end, and with this in mind applicant provides means in addition to the thumb screw 1Q at the inner end ot' the blade 11 for engaging the outer end of the blade 11 to thereby retain the same fixed against relative movement. This means conveniently comprises an extension of the blade 3 adapted to overlie the outer end and upper edge of the blade 11, it having been previously noted that the blade 3 is conveniently of bendablc metallic material, and said overhanging part which is indicated by the numeral 13 is preferably formed by bending a portion ot' the end of said blade 3 upon itself as clearly shown in the drawings. Said rearwardly bent portion 13 is designed to frictionlly engage the outer end ot the blade 11 therebetween and the surface of the blade 3. convenient way of forming the retaining members 9 and 13 is to slit the blade 3 longitudinally at its outer edge, then bend the upper slitted portion upon itself to form the retaining member E) and the lower slitted portion upon itselil to torni the retaining member 13 and bevel the edge of the blade between said slitted portions as at 14, thereby doing away with sharp edges or protuberances at the outer end of the blade 3.

The operation may be briefly reviewed as follows: vWhen the parts are in normal position the rule 4 and bevel blade 11 which latter also has indicating characters thereon as shown may be said to constitute a part of' the try-square blade 3. In use the combined gage and pencil carrier may be slid along the rule 4 for ruling and marking purposes, and when the same is used as a gage per se the thumb screw is threaded into engagement with one of the receiving notches 4b in the rule 4 and thereby effectively retained in adjusted position. The gage and pencil carrier is prevented from accidental separation by its overhanging flanges, and the longitudinal movement thereof is limited by the inwardly bent flange 9 of the blade 3. Now should it be desired to bring the bevel blade into operative position the operator imparts movement to the thumb screw 12 to release the blade at its inner end, when said blade may be moved longitudinally of the blade 3, said movement being permitted by the slotted portion 11", and when freed from the retaining member 13 may be swung downwardly to the desired angle, the operator being guided in determining the proper angle by suitable indicating characters 14 arranged about the segmental recess of the handle 1 the blade having a projecting pointer 14a conveniently an integral extension of the latter. lhen properly adjusted the thumb screw is adjusted to hold the blade in proper position. 'Io more effectively hold the blade in closed position, the retaining flange 13 is conveniently bent closer at its lower edge, to the blade 3 than at its upper edge, which will prevent separation of the blade 11 until the blade is moved longitudinally to a point beyond said flange 13.

I claim:

1. In an article of the cha r'acter described, the combination of a stock, a blade projecting atan angle thereto and constituting with the handle a try-square, a bevel blade having a pin and slot connection with the try-square whereby it is pivoted at its inner end to said try-square, and an integral projection on the first mentioned blade, the said projection forming therebetween and the blade a pocket for the reception of the bevel blade to hold the same in closed position.

In an article of the character described, the combination of a stock, a blade projecting at an angle thereto and constituting with the handle a try-square, a bevel blade pivoted at its inner end to said try-square, the first mentioned blade being formed of bendable material, and having a bent portion overlapping the body of said first mentioned blade, for forming between the bend portion and said body,'a receiving pocket for holding the bevel blade in closed position, substantially as and for the purpose described.

3. In a combined try-square and bevel, the combination of a handle and an angle blade secured thereto, a bevel having a pin and j projecting at an angle to the handle, a rule slot connection with the handle of the trysquare With associated means for holding the same in adjusted .positions, and means at the outer end of the angle blade for retaining the bevel blade in closed position.

4. In a tool of the character described, the combination of a handle, a blade proj eet ing at an angle thereto, rules upon one tace of the blade adjacent the upper and lower edges of the blade and integral overhanging edges on the blade arranged to engage the outer ends of the rules.

In a combined try-square and bevel a handle, connected try-square and bevel blade secured adjacent one edge of the try-square blade, a gage slidable longitudinally of the rule and having retaining flanges, the said rule having a series of notches registering 20 with the divisions thereof, and a retaining member carried by the gage for engaging said notches to hold the same in adjusted positions.

In testimony whereof I affix my signature 25 in presence of tivo Witnesses.

MYRON DICKSON. Iitnesses HAROLD H. ISENHOWER, GEORGE IWI. ISENHOWER. 

